package com.lw.tcpdemo;

import java.io.IOException;
import java.io.OutputStream;
import java.net.InetAddress;
import java.net.Socket;
import java.net.UnknownHostException;

/**
 * @author LW
 * @2020/9/13 21:47
 */
public class TcpClientDemo01 {

    public static void main(String[] args) throws UnknownHostException {
        Socket socket = null;
        OutputStream os = null;

        try {
            //1.要知道服务器的地址
            InetAddress serverIP = InetAddress.getByName("127.0.0.1");
            //端口号
            int port = 9999;
            //2.创建一个Socket连接
            socket = new Socket(serverIP,port);
            //3.发送消息 IO流
            os = socket.getOutputStream();
            os.write("学习TCP".getBytes());


        } catch (Exception e) {
            e.printStackTrace();
        }finally {
            if (os!=null){
                try {
                    os.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            if (socket!=null){
                try {
                    socket.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }

        }
    }
}
